We manufacture high-precision CNC machined fittings including hydraulic fittings, pneumatic fittings, pipe adapters, tube fittings, elbows, tees, couplings, and custom fluid connectors. Ideal for prototypes, small-batch production, and applications where standard fittings don’t meet your exact requirements.
Support for:
Hydraulic & Pneumatic systems
Fluid transfer and high-pressure applications
Automotive, industrial equipment, new energy, and medical devices
Precision CNC machining · Small-batch friendly (1–600 pcs) · No tooling cost · Fast DFM feedback

Our CNC Machined Fittings Capabilities
At 6CNC, we specialize in contract manufacturing of custom precision fittings and fluid system components. We help OEMs, equipment manufacturers, and system integrators produce high-performance fittings with excellent sealing, thread accuracy, and pressure resistance.
We commonly support:
- Hydraulic hose fittings and adapters
- Pneumatic quick-connect fittings and valves
- Pipe fittings, elbows, tees, and couplings
- Tube fittings and compression fittings
- Custom adapters and reducers
- High-pressure and specialty fluid connectors







Key Features
- Tight tolerances on threads, sealing surfaces, and concentricity for leak-proof performance
- Complex geometries: internal/external threads (NPT, BSP, ORB, JIC, etc.), grooves, barbs, and undercuts
- Wide material selection for corrosion resistance, strength, and pressure rating
- Consistent quality across prototypes to small-medium production runs
- Ready for assembly, pressure testing, or surface treatment
Technical Specifications
| Feature | Specification |
|---|---|
| Materials | Brass, Stainless Steel, Aluminum, Carbon Steel, Titanium |
| Size | 1/8″ – 4″ (custom sizes available) |
| Tolerance | ±0.005mm ~ ±0.02mm (critical sealing & thread features) |
| Surface Finish & Treatment | Polishing, Anodizing, Plating (Nickel, Zinc), Passivation, Black Oxide |
| Processes | CNC Turning, Swiss Lathe, 5-Axis Milling, Thread Rolling |
| Batch Size | 1 – 600 pcs (prototypes to small-medium runs) |
Common Fitting Types We Support
Hydraulic Fittings
High-pressure adapters, hose ends, and ORB/JIC fittings with precise sealing surfaces.
Pneumatic Fittings
Quick-connect couplings, push-in fittings, and valve bodies for reliable air systems.
Pipe & Tube Fittings
Elbows, tees, reducers, couplings, and custom threaded pipe fittings.
Specialty Adapters & Connectors
Custom reducers, bulkhead fittings, and multi-port blocks for complex fluid systems.
Why Choose 6CNC for Custom Fittings
- Free DFM review focused on thread fit, sealing performance, and manufacturability
- Strong capability in complex internal features and thin-wall fittings
- Swiss-type and multi-axis machines for high concentricity and repeatability
- Full support: machining + surface treatment + pressure testing + inspection
- Fast turnaround for prototypes and bridge production from Shenzhen
Ready to Start Your Custom Fittings Project?
Whether you need custom hydraulic adapters, pneumatic connectors, or specialty pipe fittings — our team will review your drawings and deliver optimized manufacturing solutions with reliable leak-proof performance.
Upload Drawings & Get a QuoteFast response within 24 hours · Free DFM review





